How many Mary Mckenzie census records do you have?

We have 3217 US Census records for Mary Mckenzie, from 1900 to 1950, across 49 states and DC.

What's in a Mary Mckenzie census record?

You'll see Mary's age, birthplace, occupation, and relationship to the head of household — plus everyone else who lived in the same home. For 1940 and 1950 records, you can also view the original handwritten census page.

How do I use census records for family research?

Census records are a snapshot of a family every 10 years. You can follow Mary Mckenzie's household over time — see when children appear, when people move states, and who's living together. YourRoots connects census data with Tree Matching and AI tools so you can build out your tree faster.

Are Mary Mckenzie census records free?

Yes. All Mary Mckenzie census records on YourRoots are free to search and view — no subscription required. We built our own index from the original federal census images.

Which census years and states cover Mary Mckenzie?

We have Mary Mckenzie records from the 1900 through 1950 US Federal Census, across 49 states and DC. Use the year and state filters to narrow your results.

How do I find Mary Mckenzie in the census?

Start by narrowing the year and state. If you know an approximate birth year, use the age column to match — census age minus the census year gives you a birth year estimate. Household members, birthplace, and occupation help confirm you have the right person.

What is the Model Tree for Mary Mckenzie?

The Model Tree is YourRoots' unique feature that links a person across multiple census decades and reconstructs their likely family — parents, siblings, spouse, and children — based on household patterns. It turns isolated records into a connected family network.

Where does the census data come from?

All records originate from the US Federal Census microfilm digitized by NARA (National Archives and Records Administration). YourRoots re-indexed the original page images using modern AI, catching names and details that older transcriptions missed.

Mary Mckenzie — US Census Records & Model Tree

We found 3217 free census records for Mary Mckenzie across 6 census years (1900–1950), in 49 states and DC and 863 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Mary Mckenzie Census Records by State & County

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Showing of 3217 records for Mary Mckenzie US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1920	Mary Mckenzie		Dooly, Georgia	Georgia	—	Daughter
1930	Mary A. Mckenzie		Macon, Missouri	Missouri	—	Daughter
1940	Mary Mckenzie	24	Johnson-County, Kentucky	Kentucky	—	Daughter
1940	Mary B Mckenzie	37	Johnson-County, Illinois	Illinois	Teacher	Daughter
1940	Mary E Mckenzie	54	Montgomery-County, North Carolina	North Carolina	—	Wife
1910	Mary E. Mckenzie		Essex, New Jersey	Ireland	—	Wife
1940	Mary Helen Mckenzie	44	Polk-County, Minnesota	Idaho	—	Wife
1940	Mary A. Mckenzie	68	Union-County, Oregon	Scotland	Farmer	Head
1940	Mary Mckenzie	60	Pender-County, North Carolina	North Carolina	Farming	Head
1940	Mary Mckenzie	16	Scotland-County, North Carolina	North Carolina	—	Daughter
1940	Mary A. Mckenzie	47	Schuylkill-County, Pennsylvania	Pennsylvania	—	Wife
1940	Mary Jean Mckenzie	21	Sedgwick-County, Kansas	Illinois	Cashier	Daughter
1930	Mary J. Mckenzie		Wilkinson, Mississippi	Mississippi	—	Wife
1930	Mary Alice Mckenzie		Bibb, Alabama	Alabama	—	Daughter
1930	Mary Mckenzie		Middlesex, Massachusetts	Massachusetts	None	Daughter
1940	Mary Mckenzie	11	Sumter-County, South Carolina	South Carolina	—	Daughter
1930	Mary C Mckenzie		Suffolk, Massachusetts	Massachusetts	Student	Daughter
1930	Mary Lee Mckenzie		Pecos, Texas	Missouri	—	Wife
1940	Mary Mckenzie	11	Pike-County, Alabama	Alabama	—	Daughter
1930	Mary Mckenzie		Linn, Missouri	Missouri	None	Wife
1900	Mary Mckenzie	12	Barbour, Alabama	Alabama	—	Daughter
1920	Mary Lizzie Mckenzie		Derry, Georgia	Georgia	—	Daughter
1910	Mary Mckenzie		Delaware, Ohio	Ohio	None	Daughter
1930	Mary E Mckenzie		Jefferson, Alabama	Alabama	—	Daughter
1940	Mary Mckenzie	12	Licking-County, Ohio	Ohio	—	Daughter
1940	Mary Mckenzie	26	Wilcox-County, Alabama	Alabama	Stenographer	Daughter
1940	Mary G. Mckenzie	37	Jasper-County, Mississippi	Mississippi	—	Wife
1930	Mary Mckenzie		Richland, South Carolina	South Carolina	—	Daughter
1910	Mary L. Mckenzie		Montgomery, Arkansas	Missouri	—	Daughter
1930	Mary J. Mckenzie		Lucas, Ohio	Ohio	—	Daughter

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About Mary Mckenzie US Census Records & Model Tree

We've indexed 3217 free, proprietary US Census records for Mary Mckenzie across 1900–1950, covering 49 states and DC: Alabama, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming.

Each record includes our Model Tree — a longitudinal reconstruction that links the same person across census decades using machine learning (XGBoost record linkage). Every link carries a confidence score: Verified (≥0.99), Confirmed (≥0.95), or Linked (lower confidence). This tells you not just what the census says, but how reliably we've connected records across time.

Every record also shows the full household — who Mary lived with, their ages, birthplaces, and occupations. For 1940 and 1950 records, you can view the original handwritten census page from the National Archives.

How we build the Model Tree. YourRoots independently indexes US Census records from NARA microfilm and links persons across decades using XGBoost-based record linkage. Each link's confidence is a per-pair match score from the model. Household corroboration (co-residents appearing on the same census pages in multiple years) strengthens the signal. The Model Tree is not a family tree submitted by users — it's reconstructed from the census data itself.

Last updated: July 30, 2026

Frequently Asked Questions

: We have 3217 US Census records for Mary Mckenzie, from 1900 to 1950, across 49 states and DC.
: You'll see Mary's age, birthplace, occupation, and relationship to the head of household — plus everyone else who lived in the same home. For 1940 and 1950 records, you can also view the original handwritten census page.
: Census records are a snapshot of a family every 10 years. You can follow Mary Mckenzie's household over time — see when children appear, when people move states, and who's living together. YourRoots connects census data with Tree Matching and AI tools so you can build out your tree faster.
: Yes. All Mary Mckenzie census records on YourRoots are free to search and view — no subscription required. We built our own index from the original federal census images.
: We have Mary Mckenzie records from the 1900 through 1950 US Federal Census, across 49 states and DC. Use the year and state filters above to narrow your results.
: Start by narrowing the year and state. If you know an approximate birth year, use the age column to match — census age minus the census year gives you a birth year estimate. Household members, birthplace, and occupation help confirm you have the right person.
: The Model Tree is YourRoots' unique feature that links a person across multiple census decades and reconstructs their likely family — parents, siblings, spouse, and children — based on household patterns. It turns isolated records into a connected family network.
: All records originate from the US Federal Census microfilm digitized by NARA (National Archives and Records Administration). YourRoots re-indexed the original page images using modern AI, catching names and details that older transcriptions missed.

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